Bhashya
यो ह वा आयतनं वेद; आयतनम् आश्रयः, तत् यो
In plain words
Whoever truly knows the abode — and "abode" here simply means refuge, what a thing rests in — that abode, whoever... [the line stops here, cut off at the page break in the source].
Close to the Sanskrit
He who indeed knows the abode; "abode" [means] refuge; that [abode], whoever — [the sentence breaks off here, at the edge of the source page].